1 /*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "core/css/CSSMatrix.h"
28
29 #include "CSSPropertyNames.h"
30 #include "CSSValueKeywords.h"
31 #include "bindings/v8/ExceptionState.h"
32 #include "core/css/CSSParser.h"
33 #include "core/css/CSSToLengthConversionData.h"
34 #include "core/css/StylePropertySet.h"
35 #include "core/css/resolver/TransformBuilder.h"
36 #include "core/dom/ExceptionCode.h"
37 #include "core/rendering/style/RenderStyle.h"
38 #include "core/rendering/style/StyleInheritedData.h"
39 #include "wtf/MathExtras.h"
40
41 namespace WebCore {
42
CSSMatrix(const TransformationMatrix & m)43 CSSMatrix::CSSMatrix(const TransformationMatrix& m)
44 : m_matrix(m)
45 {
46 ScriptWrappable::init(this);
47 }
48
CSSMatrix(const String & s,ExceptionState & exceptionState)49 CSSMatrix::CSSMatrix(const String& s, ExceptionState& exceptionState)
50 {
51 ScriptWrappable::init(this);
52 setMatrixValue(s, exceptionState);
53 }
54
setMatrixValue(const String & string,ExceptionState & exceptionState)55 void CSSMatrix::setMatrixValue(const String& string, ExceptionState& exceptionState)
56 {
57 if (string.isEmpty())
58 return;
59
60 RefPtr<MutableStylePropertySet> styleDeclaration = MutableStylePropertySet::create();
61 if (CSSParser::parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true, HTMLStandardMode, 0)) {
62 // Convert to TransformOperations. This can fail if a property
63 // requires style (i.e., param uses 'ems' or 'exs')
64 RefPtr<CSSValue> value = styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform);
65
66 // Check for a "none" or empty transform. In these cases we can use the default identity matrix.
67 if (!value || (value->isPrimitiveValue() && (toCSSPrimitiveValue(value.get()))->getValueID() == CSSValueNone))
68 return;
69
70 DEFINE_STATIC_REF(RenderStyle, defaultStyle, RenderStyle::createDefaultStyle());
71 TransformOperations operations;
72 if (!TransformBuilder::createTransformOperations(value.get(), CSSToLengthConversionData(defaultStyle, defaultStyle), operations)) {
73 exceptionState.throwUninformativeAndGenericDOMException(SyntaxError);
74 return;
75 }
76
77 // Convert transform operations to a TransformationMatrix. This can fail
78 // if a param has a percentage ('%')
79 if (operations.dependsOnBoxSize())
80 exceptionState.throwUninformativeAndGenericDOMException(SyntaxError);
81 TransformationMatrix t;
82 operations.apply(FloatSize(0, 0), t);
83
84 // set the matrix
85 m_matrix = t;
86 } else { // There is something there but parsing failed.
87 exceptionState.throwUninformativeAndGenericDOMException(SyntaxError);
88 }
89 }
90
91 // Perform a concatenation of the matrices (this * secondMatrix)
multiply(CSSMatrix * secondMatrix) const92 PassRefPtr<CSSMatrix> CSSMatrix::multiply(CSSMatrix* secondMatrix) const
93 {
94 if (!secondMatrix)
95 return 0;
96
97 return CSSMatrix::create(TransformationMatrix(m_matrix).multiply(secondMatrix->m_matrix));
98 }
99
inverse(ExceptionState & exceptionState) const100 PassRefPtr<CSSMatrix> CSSMatrix::inverse(ExceptionState& exceptionState) const
101 {
102 if (!m_matrix.isInvertible()) {
103 exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
104 return 0;
105 }
106
107 return CSSMatrix::create(m_matrix.inverse());
108 }
109
translate(double x,double y,double z) const110 PassRefPtr<CSSMatrix> CSSMatrix::translate(double x, double y, double z) const
111 {
112 if (std::isnan(x))
113 x = 0;
114 if (std::isnan(y))
115 y = 0;
116 if (std::isnan(z))
117 z = 0;
118 return CSSMatrix::create(TransformationMatrix(m_matrix).translate3d(x, y, z));
119 }
120
scale(double scaleX,double scaleY,double scaleZ) const121 PassRefPtr<CSSMatrix> CSSMatrix::scale(double scaleX, double scaleY, double scaleZ) const
122 {
123 if (std::isnan(scaleX))
124 scaleX = 1;
125 if (std::isnan(scaleY))
126 scaleY = scaleX;
127 if (std::isnan(scaleZ))
128 scaleZ = 1;
129 return CSSMatrix::create(TransformationMatrix(m_matrix).scale3d(scaleX, scaleY, scaleZ));
130 }
131
rotate(double rotX,double rotY,double rotZ) const132 PassRefPtr<CSSMatrix> CSSMatrix::rotate(double rotX, double rotY, double rotZ) const
133 {
134 if (std::isnan(rotX))
135 rotX = 0;
136
137 if (std::isnan(rotY) && std::isnan(rotZ)) {
138 rotZ = rotX;
139 rotX = 0;
140 rotY = 0;
141 }
142
143 if (std::isnan(rotY))
144 rotY = 0;
145 if (std::isnan(rotZ))
146 rotZ = 0;
147 return CSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(rotX, rotY, rotZ));
148 }
149
rotateAxisAngle(double x,double y,double z,double angle) const150 PassRefPtr<CSSMatrix> CSSMatrix::rotateAxisAngle(double x, double y, double z, double angle) const
151 {
152 if (std::isnan(x))
153 x = 0;
154 if (std::isnan(y))
155 y = 0;
156 if (std::isnan(z))
157 z = 0;
158 if (std::isnan(angle))
159 angle = 0;
160 if (!x && !y && !z)
161 z = 1;
162 return CSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(x, y, z, angle));
163 }
164
skewX(double angle) const165 PassRefPtr<CSSMatrix> CSSMatrix::skewX(double angle) const
166 {
167 if (std::isnan(angle))
168 angle = 0;
169 return CSSMatrix::create(TransformationMatrix(m_matrix).skewX(angle));
170 }
171
skewY(double angle) const172 PassRefPtr<CSSMatrix> CSSMatrix::skewY(double angle) const
173 {
174 if (std::isnan(angle))
175 angle = 0;
176 return CSSMatrix::create(TransformationMatrix(m_matrix).skewY(angle));
177 }
178
toString() const179 String CSSMatrix::toString() const
180 {
181 // FIXME - Need to ensure valid CSS floating point values (https://bugs.webkit.org/show_bug.cgi?id=20674)
182 if (m_matrix.isAffine())
183 return String::format("matrix(%f, %f, %f, %f, %f, %f)", m_matrix.a(), m_matrix.b(), m_matrix.c(), m_matrix.d(), m_matrix.e(), m_matrix.f());
184 return String::format("matrix3d(%f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f)",
185 m_matrix.m11(), m_matrix.m12(), m_matrix.m13(), m_matrix.m14(),
186 m_matrix.m21(), m_matrix.m22(), m_matrix.m23(), m_matrix.m24(),
187 m_matrix.m31(), m_matrix.m32(), m_matrix.m33(), m_matrix.m34(),
188 m_matrix.m41(), m_matrix.m42(), m_matrix.m43(), m_matrix.m44());
189 }
190
191 } // namespace WebCore
192